What is longest time to stay on Test without it being a problem. I am on my 9th week and would like to take it at least 16 weeks. Just not satisfied with the gains this time. Wish I had some deca to take with it but I didn't. I took some d tabs for the first four weeks. My weight dipped around five to seven pound after I got of the d tabs and it really pissed me off. I just don't seem to get the 20lb gains off Test E any more. More like 10-12 and then go back to my weight of around 200. I would really like to get around 225 and be able to maintain at around 215 or so. Should I try something else next time. I feel like 750mgs/week of test E should pack plenty of weight on me. Any suggestions would be appreciated.